See The Dangers Of Going To Bed Without Brushing Your Teeth

According to dentists, going to bed without brushing your teeth is like going to bed with faeces in your mouth. This is because at every time a meal is taken, the bacteria that naturally reside in the mouth feasts on the food eaten and like every other living organism, the bacteria excrete waste after a meal. This waste is highly acidic and breaks down tooth enamel, causing root decay and cavities. 

Brushing is therefore important not just for fresh breath, but because skipping a session might enhance bacterial buildup in the form of plaque, which can lead to cavities and gum disease.

Experts therefore recommends that a gentle dry brush can be done while lying in bed if an individual is too exhausted to brush.